SFI SYSTEM(w/o Canister Pump Module) Starter Signal Circuit

DTC Code DTC Name
Starter Signal Circuit

DESCRIPTION

While the engine is being cranked, current flows from terminal ST1 of the ignition switch assembly*1 or terminal STAR of the certification ECU (smart key ECU assembly)*2 to the park/neutral position switch and to terminal STA of the ECM (STA signal).

  • *1: w/o Entry and Start System

  • *2: w/ Entry and Start System

WIRING DIAGRAM

Refer to DTC P0617.

Click here

CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.

Tip:

This procedure is based on the premise that the engine can crank normally. If the engine cannot crank normally, proceed to the problem symptoms table.

Click here

PROCEDURE

  1. CHECK IF VEHICLE IS EQUIPPED WITH ENTRY AND START SYSTEM

    1. Confirm the vehicle specifications.

      Result

      Result

      w/o Entry and Start System

      w/ Entry and Start System
    w/ Entry and Start System

    READ VALUE USING GTS (STARTER SIGNAL)Click here

    w/o Entry and Start System

  2. READ VALUE USING GTS (STARTER SIGNAL)

    1. Connect the GTS to DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Starter Signal.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Starter Signal

    5. Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.

      OK

      Ignition Switch Position

      Starter Signal

      ON

      OFF

      START

      ON

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

  3. CHECK ST RELAY (POWER SOURCE)

    1. A296486C04

      *1

      No. 2 Engine Room Relay Block Assembly

      *2

      ST Relay

      Remove the ST relay from the No. 2 Engine Room Relay Block Assembly

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      ST relay terminal 2 - Body ground

      Engine cranking

      11 to 14 V
      Tip:

      The engine does not crank because the relay is not installed.

      Result

      Proceed to

      OK

      NG (for Manual Transaxle)

      NG (for Automatic Transaxle)
    NG (for Manual Transaxle)

    CHECK HARNESS AND CONNECTOR (ST RELAY - CLUTCH START SWITCH ASSEMBLY)Click here

    NG (for Automatic Transaxle)

    CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY)Click here

    OK

  4. INSPECT RELAY (ST RELAY)

    1. Inspect the ST relay.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE RELAY (ST RELAY)

    OK

  5. CHECK HARNESS AND CONNECTOR (ST RELAY - BODY GROUND)

    1. Remove the ST relay from the No. 2 engine room relay block assembly.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      ST relay terminal 1 - Body ground

      Always

      Below 1 Ω

    Result

    Result

    OK (for Manual Transaxle)

    OK (for Automatic Transaxle)

    NG
    OK (for Automatic Transaxle)

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - PARK/NEUTRAL POSITION SWITCH)

    OK (for Manual Transaxle)

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - CLUTCH PEDAL SWITCH)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ST RELAY - BODY GROUND)

  6. CHECK HARNESS AND CONNECTOR (ST RELAY - CLUTCH START SWITCH ASSEMBLY)

    1. Remove the ST relay from the No. 2 engine room relay block assembly.

    2. Disconnect the clutch start switch assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Table 1. for LHD

      Tester Connection

      Condition

      Specified Condition

      ST relay terminal 2 - A4-1

      Always

      Below 1 Ω

      ST relay terminal 2 or A4-1 - Body ground

      Always

      10 kΩ or higher
      Table 2. for RHD

      Tester Connection

      Condition

      Specified Condition

      ST relay terminal 2 - F2-1

      Always

      Below 1 Ω

      ST relay terminal 2 or F2-1 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT CLUTCH START SWITCH ASSEMBLY

    1. Inspect the clutch start switch assembly.

      Click here

      Result

      Result

      OK

      NG
    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY

    Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (IGNITION OR STARTER SWITCH ASSEMBLY - CLUTCH START SWITCH ASSEMBLY)

    1. Disconnect the ignition or starter switch assembly connector.

    2. Disconnect the clutch start switch assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Table 3. for LHD

      Tester Connection

      Condition

      Specified Condition

      G4-2 (ST2) - A4-2

      Always

      Below 1 Ω

      G4-2 (ST2) or A4-2 - Body ground

      Always

      10 kΩ or higher
      Table 4. for RHD

      Tester Connection

      Condition

      Specified Condition

      G4-2 (ST2) - F2-2

      Always

      Below 1 Ω

      G4-2 (ST2) or F2-2 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. INSPECT IGNITION SWITCH ASSEMBLY

    1. Inspect the ignition switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH ASSEMBLY)

    NG

    REPLACE IGNITION SWITCH ASSEMBLY

    Click here

  10. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY)

    1. Remove the ST relay from the No. 2 engine room relay block assembly.

    2. Disconnect the park/neutral position switch assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B36-9 (L) - ST relay terminal 2

      Always

      Below 1 Ω

      A62-22 (STA) - ST relay terminal 2

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    1. Inspect the park/neutral position switch assembly.

    Result

    Result

    OK

    NG
    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    OK

  12. CHECK HARNESS AND CONNECTOR (IGNITION SWITCH ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ECM)

    1. Disconnect the park/neutral position switch assembly connector.

    2. Disconnect the ignition switch assembly connector.

    3. Disconnect the ECM connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G4-2 (ST2) - B36-4 (B)

      Always

      Below 1 Ω

      G4-2 (ST2) - B77-63 (NSW)

      Always

      Below 1 Ω

      G4-2 (ST2) or B36-4 (B) or B77-63 (NSW) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT IGNITION SWITCH ASSEMBLY

    1. Inspect the ignition switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH ASSEMBLY)

    NG

    REPLACE IGNITION SWITCH ASSEMBLY

    Click here

  14. READ VALUE USING GTS (STARTER SIGNAL)

    1. Connect the GTS to DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Primary / Starter Signal.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Starter Signal

    5. Check the value displayed on the GTS when the ignition switch is turned to the ON and START positions.

      OK

      Ignition Switch Position

      Starter Signal

      ON

      OFF

      START

      ON

    Result

    Proceed to

    OK

    NG (for Automatic Transaxle)

    NG (for Manual Transaxle)
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG (for Manual Transaxle)

    INSPECT CLUTCH START SWITCH ASSEMBLYClick here

    NG (for Automatic Transaxle)

  15. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    1. Inspect the park/neutral position switch assembly.

    Result

    Result

    OK

    NG
    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    OK

  16. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - ST RELAY)

    1. Remove the ST relay from the No. 2 engine room relay block assembly.

    2. Disconnect the park/neutral position switch assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B36-9 (L) - ST relay terminal 2

      Always

      Below 1 Ω

      A62-22 (STA) - ST relay terminal 2

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - PARK/NEUTRAL POSITION SWITCH ASSEMBLY, ECM)

    1. Disconnect the park/neutral position switch assembly connector.

    2. Disconnect the certification ECU (smart key ECU assembly) connector.

    3. Disconnect the ECM connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - B36-4 (B)

      Always

      Below 1 Ω

      G82-5 (STAR) - B77-63 (NSW)

      Always

      Below 1 Ω

      G82-5 (STAR) or B36-4 (B) or B77-63 (NSW) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    GO TO ENTRY AND START SYSTEM

    Click hereClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  18. INSPECT CLUTCH START SWITCH ASSEMBLY

    1. Inspect the clutch start switch assembly.

      Click here

      Result

      Result

      OK

      NG
    NG

    REPLACE CLUTCH START SWITCH ASSEMBLY

    Click here

    OK

  19. CHECK HARNESS AND CONNECTOR (CLUTCH START SWITCH ASSEMBLY, ST RELAY - ECM)

    1. Disconnect the clutch start switch assembly connector.

    2. Remove the ST relay from the No. 2 engine room relay block and junction block assembly.

    3. Disconnect the ECM connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Table 5. for LHD

      Tester Connection

      Condition

      Specified Condition

      A4-1 - A62-22 (STA)

      Always

      Below 1 Ω

      A4-1, ST relay terminal 2 or A62-22 (STA) - Body ground

      Always

      10 kΩ or higher
      Table 6. for RHD

      Tester Connection

      Condition

      Specified Condition

      F2-1 - A62-22 (STA)

      Always

      Below 1 Ω

      F2-1, ST relay terminal 2 or A62-22 (STA) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  20. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - CLUTCH START SWITCH ASSEMBLY)

    1. Disconnect the clutch start switch assembly connector.

    2. Disconnect the certification ECU (smart key ECU assembly) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Table 7. for LHD

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - A4-2

      Always

      Below 1 Ω

      G82-5 (STAR) or A4-2 - Body ground

      Always

      10 kΩ or higher
      Table 8. for RHD

      Tester Connection

      Condition

      Specified Condition

      G82-5 (STAR) - F2-2

      Always

      Below 1 Ω

      G82-5 (STAR) or F2-2 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    GO TO ENTRY AND START SYSTEM

    Click hereClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR